CVE-2020-13113Network attack vector

Application crash via uninitialized MakerNote pointers

Published May 21, 2020 · Updated Aug 4, 2024

Use of uninitialized memory in libexif before 0.6.22 allows remote attackers to crash applications via crafted EXIF MakerNote data. When a MakerNote entry reports zero components, the Canon, Fuji, Olympus, and Pentax loaders leave the new entry structure uninitialized and later dereference its pointer. Exploitation requires a consuming application to parse attacker-supplied EXIF data; documented outcomes are an application crash and potential use-after-free.

CVSS severity8.2
High
EPSS probability1.89%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use of uninitialized memory in libexif before 0.6.22 allows remote attackers to crash applications via crafted EXIF MakerNote data. When a MakerNote entry reports zero components, the Canon, Fuji, Olympus, and Pentax loaders leave the new entry structure uninitialized and later dereference its pointer. Exploitation requires a consuming application to parse attacker-supplied EXIF data; documented outcomes are an application crash and potential use-after-free.

The record

CVE
CVE-2020-13113
Published
May 21, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-908
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 21, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.4NIST NVDAV:N/AC:L/Au:N/C:P/I:N/A:P
8.2NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-908Use of Uninitialized Resource

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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